Summary of Impact of Adoption of New Accounting Pronouncements on Balance Sheets (Detail) - USD ($) $ in Thousands	Oct. 27, 2018	Apr. 28, 2018	Oct. 28, 2017
Assets
Prepaid expenses and other current assets	$ 77,938	$ 65,153	$ 141,244
Liabilities and Shareholders' Equity
Accrued liabilities	267,479	260,209	280,905
Gift card liabilities	214,352	323,465	327,217
Deferred taxes	72,147	52,044	83,785
Retained earnings	(212,684)	(216,236)	$ (108,383)
Calculated under Revenue Guidance in Effect before Topic 606 \| ASU 2014-09
Assets
Prepaid expenses and other current assets	77,615
Liabilities and Shareholders' Equity
Accrued liabilities	266,868
Gift card liabilities	302,846	323,465
Deferred taxes	52,044
Retained earnings	(281,363)
Difference between Revenue Guidance in Effect before and after Topic 606 \| ASU 2014-09
Assets
Prepaid expenses and other current assets	323
Liabilities and Shareholders' Equity
Accrued liabilities	611
Gift card liabilities	(88,494)	$ (90,147)
Deferred taxes	20,103
Retained earnings	$ 68,679

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of the liability for outstanding gift cards. Retail customers purchase gift cards or gift certificates that can be redeemed at a later date for merchandise or services; those unredeemed represent a liability of the entity because the revenue is being deferred.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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